ROHM LTR10_1

High Power Low Ohmic Chip Resistors<Wide Terminal type>
LTR10 (2012 size : 1 / 2W)
zFeatures
1) Improved welding strength
The structure of longer electrodes provides the wider welding area than the chip resistors with normal electrodes, and this
enhanced the solder welding strength.
2) Increased surge-resistance
This is achieved by Rohm’s original trimming technology plus resistive element patterning.
3) High-power tolerance
Two times of the rated power is guaranteed than the normal-electrode resistors.
4) ROHM resistors are ISO-9001 & ISO/TS16949 certified.
Design and specifications are subject to change without notice. Carefully check the specification sheet before using or
ordering it.
zApplications
Automotive, industrial and power supply.
zRatings
Item
Rated power
Conditions
Specifications
Power must be derated according to the power derating curve in
Figure 1 when ambient temperature exceeds 70°C.
0.5W (1 /2W)
at 70°C
100
POWER LOAD (%)
80
60
40
20
0
−55
0
70
100
155
AMBIENT TEMPERATURE (°C)
Fig.1
Rated voltage
Rated current
The voltage rating is calculated by the following equation.
E=
I =
P×R
P/R
E : Rated voltage (V)
I : Rated current (A)
P : Rated power (W)
R : Nominal resistance (Ω)
Nominal resistance
See Table 1.
−55°C to + 155°C
Operating temperature
Table 1
Resistance range
(Ω)
0.047 to 9.1
Resistance
tolerance
Special part number
F (±1%)
S
J (±5%)
L
Resistance temperature coefficient
(ppm/°C)
±150
zBefore using components in circuits where they will be exposed to transients such as pulse loads (short–duration, high– level loads), be certain to evaluate the
component in the mounted state. In addition, the reliability and performance of this component cannot be guaranteed if it is used with a steady state voltage that
is greater than its rated voltage.
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1/3
2009.10 - Rev.B
LTR10
Data Sheet
zCharacteristics
Guaranteed value
Item
Test conditions (JIS C 5201-1)
Resistor type
JIS C 5201-1 4.5
Voltage : A
Measuring method : Measure under termination by 4 probes
Under termination
F : ±1%
J : ±5%
Resistance
Terminal
Variation of resistance
with temperature
See Table.1
JIS C 5201-1 4.8
Measurement : −55 / +25 / +125°C
Overload
± (2.0%+0.1Ω)
JIS C 5201-1 4.13
Rated voltage (current) × 2.5, 2s.
A new uniform coating of minimum of
95% of the surface being immersed
and no soldering damage.
JIS C 5201-1 4.17
Rosin·Ethanol (25%WT)
Soldering condition : 235±5°C
Duration of immersion : 2.0±0.5s.
Solderability
Resistance to
soldering heat
± (1.0%+0.005Ω)
No remarkable abnormality on the appearance.
JIS C 5201-1 4.18
Soldering condition : 260±5°C
Duration of immersion : 10±1s.
Rapid change of
temperature
± (1.0%+0.005Ω)
JIS C 5201-1 4.19
Test temp. : −55°C to +125°C 5cyc
Damp heat, steady state
± (3.0%+0.005Ω)
JIS C 5201-1 4.24
40°C, 93%RH
Test time : 1,000h to 1,048h
Endurance at 70°C
± (3.0%+0.005Ω)
JIS C 5201-1 4.25.1
Rated voltage (current), 70°C
1.5h : ON − 0.5h : OFF
Test time : 1,000h to 1,048h
Endurance
± (3.0%+0.005Ω)
JIS C 5201-1 4.25.3
155°C
Test time : 1,000h to 1,048h
Resistance to solvent
± (0.5%+0.005Ω)
JIS C 5201-1 4.29
23±5°C, Immersion cleaning, 5±0.5min.
Solvent : 2-propanol
Bend strength of
the end face plating
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Without open.
JIS C 5201-1 4.33
2/3
2009.10 - Rev.B
LTR10
Data Sheet
zDimensions (Unit : mm)
4
3
5
W
No.
2
a
R10
L
b
6
1
a
b
7
t
Size code
L
W
t
a
b
2012 (0805)
1.2 ± 0.1
2.0 ± 0.1
0.55 ± 0.1
0.3 ± 0.2
0.35 ± 0.2
Material
1
Resistive element
2
Silver thick film electrode
3
Silver thick film side electrode
4
Nickel electrode
5
Sn electrode
6
Overcoating
7
Alumina substrate
zPackaging
Reel
Taping
P0
P2
P1
φD0
E
02
04
06
W
08
06
D
04
B
02
A
08
F
A0
Heat crimp cover/Tape
Thick paper (Underside paper tape) Chip resistor Square punchout hole
mount
T2
C
Label
EIAJ ET-7200B compliant
(Unit: mm)
W
F
E
8.0±0.3
3.5±0.05
1.75±0.1
(Unit: mm)
A
φ180
B
0
−1.5
φ60
C
+1
0
9
+1.0
0
D
D0
φ13±0.2
φ1.5
+0.1
0
A0
1.65
B0
+0.2
−0.1
2.4
+0.2
−0.1
P0
P1
P2
T2
4.0±0.1
4.0±0.1
2.0±0.05
Max. 1.1
zPart No. Explanation
L T R 1 0
E V H
J
S
Resistance tolerance Special part number
Part No.
F
J
±1%
±5%
S 0.011 to 0.091 Ω
L 0.1 Ω
Nominal resistance
Resistance code, 3 or 4 digits.
Resistance
tolerance
FS, FL, JS :
JL
:
Resistance
code
4 digits
3 digits
Packaging Specifications Code
Part No.
Code
LTR10
EVH
Resistance tolerance
F(±1%)
J(±5%)
Packaging specifications
Paper tape (4mm Pitch)
Reel
φ180mm (7inch)
Basic ordering unit
(pcs)
5,000
Reel (φ180mm) : Compatible with JEITA standard "EIAJ ET-7200B"
: Standard product
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3/3
2009.10 - Rev.B
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the
consent of ROHM Co.,Ltd.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specified in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, fire or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller,
fuel-controller or other safety device). ROHM shall bear no responsibility in any way for use of
any of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.
ROHM Customer Support System
http://www.rohm.com/contact/
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